Brake Booster Vacuum Sensor Circuit Low Input
Table of contents
P1577 BUICK Possible Causes
- Faulty Brake Booster Vacuum (BBV) sensor
- Brake Booster Vacuum (BBV) sensor harness is open or shorted
- Brake Booster Vacuum (BBV) sensor circuit poor electrical connection
How do I fix code P1577 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1577 BUICK code
The cost of diagnosing the P1577 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1577 BUICK Description
The P1577 code is set when the Powertrain Control Module (PCM) detects that the Brake Booster Vacuum (BBV) was -8 kPa or less, conditions met for 2 seconds.